Automatic valve



March 29,1927.

Y L. KALKBRENNER AUTOMATI C VALVE Filed NOV. 25. 1925 Logis /'alkrenfzer INVENTOR ATTORNEY WITNESS:

Patented Mar. 29, 19,274.

PATENT OFFICE.

LOUIS KALKBRENNER, OF WALL, SOUTH DAKOTA.

AUTOMATIC VALVE.

Application filed November 23, 1925.

This invention relates t a safety device for a gas line, the general object o'l' the in vention being to provide means 'for automatically closing a valve in the gas line when the gas pressure falls so that when the pressure resumes, the gas cannot escape and do any damage.

This invention also consists in certain other features oit' construction and in the combination and arrangeniient of the several parts, to be hereinafter fully described, illustrated in the accompanying drawingsano specifically pointed out in the appended claims.

In describing my invention in detail, reterence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure l is a view, partly in section, showing the parts in a position with the valve closed.

Figure 2 is a similar view, but showing the parts with the valve in open position.

Figure 3 is an end view.

In these views, l indicates the valve in the gas line 2 which is provided with the handle 3. A tube 4 is connected with the line by the coupling 5 and a telescopic casing 6 is attached to the tube, the movable part 6 of the casing being nornially held in contracted position by the coiled spring 7 which has its ends connected with the ends oil the two parts of the casing. The valve l is placed in the main in advance of the cou pling 5. A nipple 8 oi rubber has one end closed and its open end is held over the opening in the tube t by the washer 9 so that the gas passing through the line will enter the nipple 8 through the coupling` 4 and thus expand the nipple. and force the part 6 ot the casing outwardly, as shown in Figure 2. This part is connected by the car 10 with the handle 3 by a slot and pm connection 1l. In this posit-ion of the parts, the valve l is open and the gas flows through the main. It the pressure falls in the main, the spring 7 contracts and pulls the part 6 inwardly, thus closing the valve, as shown in Figure l, so that the gas is shut off and Serial No. 71,001.

it will not low again until the handle 8 is moved to open position. lVhen this is done, the expansion ot the nipple 8 by the gas pressure will hold the valve in open position.

Thus I have provided simple means for automatically closing a gas valve when the gas pressure falls so that there is no danger of the gas escaping through the burners and the like when the pressure resumes. an

I also desire to enclose the parts in a housing 12 to protect the'parts from dust and l may also place oil, as shown at 1S, in the housing, which covers the valve, to lubricate the parts. The housing is preferably 6a formed ot two parts fastened together and has a door 14 which is held closed by the thumb nut l5.

It is thought 'from the foregoing description that the advantages and novel features 7o of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

lVhat I claim is l. lin combination with a gas main and its valve, a telescopic casing in communication with the main, a nipple in the casing 30 of flexible material held expanded by the gas pressure, said expansion of the nipple moving the telescopic member ot' the casing, a spring tor holding the telescopic member in contracted position and means S5 tor connecting said telescopic part with the valve.

In combination with a gas main and its valve, a telescopic casing having a nipple of tlevible material therein, a tube connectY ing the interior ot' the nipple with the gas main, a coiled spring connecting the two parts of 'the telescopic casing and acting to hold the same contracted, a handle on the valve, an ear on the movable part of the casing and a slot and pin connection bee tween the ear and said handle.

In testimony whereof I ailiX my signature.

LOUIS KALKBRENNER. 

